143845 has 8 divisors (see below), whose sum is σ = 185976. Its totient is φ = 106176.

The previous prime is 143833. The next prime is 143873. The reversal of 143845 is 548341.

143845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 30276 + 113569 = 174^2 + 337^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 143845 - 2⁵ = 143813 is a prime.

It is a Duffinian number.

143845 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1042 + ... + 1171.

It is an arithmetic number, because the mean of its divisors is an integer number (23247).

2¹⁴³⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

143845 is a deficient number, since it is larger than the sum of its proper divisors (42131).

143845 is a wasteful number, since it uses less digits than its factorization.

143845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231.

The product of its digits is 1920, while the sum is 25.

The square root of 143845 is about 379.2690338005. The cubic root of 143845 is about 52.3960148864.

Subtracting 143845 from its reverse (548341), we obtain a square (404496 = 636²).

The spelling of 143845 in words is "one hundred forty-three thousand, eight hundred forty-five".